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post #1 of 3 (permalink) Old 02-21-2010, 01:39 PM Thread Starter
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CDI - Ignition module

I recently pull my blown 521 CC Type 536 Engine out of my 91' Formula pLus and put in a 521CC Type 537.... all went well with the swamp, however, I am down to the wiring.. and mucht o my surprise I found the Coil wiring does not mach up with my old wiring harness

I believe the wires that go to the Ignition Module my original engine has 2 wires (black & Black-RED) the new engine has 3 wires (Black, Black-Red, and Black - White)... I am not sure what to do.. I tried some different combinations hoping to find the right hookup, but haven't

I was jus searching on the Net for a CDI with a 3 wire input.. but can't seam to find on...

Not sure what I should do.

Anyhelp I would appreciate it.

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post #2 of 3 (permalink) Old 02-22-2010, 07:27 AM
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What did the new engine come out of?

1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 Sled of the Month! (Lost in fire 4-7-13)
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post #3 of 3 (permalink) Old 02-22-2010, 07:49 PM
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Nippendenso CDI's had a 3 spot plug that plugs into the engine, 2 spot plug that plugs into the coil, and some had an additional wire (90-92) Formula Plus.

Many machines used the type you are looking for, Citations, Nordics, Skandics.

Ski-Doo CDI Boxes

I have the box you are looking for. $20 plus shipping.
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